Here I introduce the monotonic stack pattern. If you don't know this pattern, you'll write solutions for problems that have answers. You'll see this pattern in Daily Temperatures (next warmer day), stock span problems, and histogram problems. Google and Amazon ask these regularly. Once you see "next greater/smaller element," think monotonic stack.
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$ curl repovive.com/roadmaps/maang-interview-prep/stacks/next-greater-element-i-why-this-problem
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